Binding Energies of 6Li p-wave Feshbach Molecules

TL;DR

This paper measures the binding energies of $^6$Li p-wave Feshbach molecules across different resonances, confirming linear magnetic field dependence and matching theoretical predictions for magnetic moments and molecular sizes.

Contribution

The study provides experimental measurements of $^6$Li p-wave Feshbach molecule binding energies and magnetic moments, validating theoretical models and calculations.

Findings

Binding energies scale linearly with magnetic field detuning.

Measured magnetic moments agree with theoretical predictions.

Theoretical calculations of closed channel amplitudes and molecular sizes are consistent with measurements.

Abstract

We present measurements of the binding energies of $^6$Li p-wave Feshbach molecules formed in combinations of the (F = 1/2, m_F = +1/2), (1), and (F = 1/2, m_F = -1/2), (2), states. The binding energies scale linearly with magnetic field detuning for all three resonances. The relative molecular magnetic moments are found to be $113 \pm 7 \mu$K/G, $111 \pm 6 \mu$K/G and $118 \pm 8 \mu$K/G for the (1)-(1), (1)-(2) and (2)-(2) resonances, respectively, in good agreement with theoretical predictions. Closed channel amplitudes and the size of the p-wave molecules are obtained theoretically from full closed-coupled calculations.